Energy & Green Tech
Electric vehicles and portable electronic devices such as laptops and mobile phones are unthinkable without lithium-ion batteries. The problem is highly toxic materials such as cobalt are often used for the cathodes of these ...
Apr 24, 2024
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33
Energy & Green Tech
A study led by Professor Sung-Kyun Jung and his research team in the School of Energy and Chemical Engineering at UNIST has unveiled a more stable approach to utilizing all-solid-state batteries (ASSBs), setting a new standard ...
Apr 9, 2024
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27
Energy & Green Tech
The long-standing challenges to the practical implementation of rechargeable zinc-air batteries (ZABs) are the electrochemical irreversibility of the Zn anode and degradation of the air cathodes in alkaline electrolyte, which ...
Jun 20, 2022
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78
Engineering
Manufacturers of secondary battery cells (LG Energy Solution, Samsung SDI, and SK) have been insisting on very stringent purity specifications from suppliers of cathode materials to ensure a consistent quality output.
Apr 1, 2024
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44
Energy & Green Tech
Switching from gas-powered cars to electric vehicles is one way to reduce carbon emissions, but building the lithium-ion batteries that power those EVs can be an energy-intensive and polluting process itself. Now researchers ...
Jun 20, 2024
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48
Energy & Green Tech
Nitriles—an organic compound with a carbon atom triple-bonded to a nitrogen atom—are commonly added to the electrolyte formula for batteries using a lithium cobalt oxide cathode, making such batteries come much closer ...
Sep 26, 2022
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20
Energy & Green Tech
Lithium-ion batteries are used not only for small consumer electronics like cell phones and laptops, but also for electric bicycles, electric vehicles and long-term power storage. Though a rare occurrence, lithium-ion batteries ...
Apr 4, 2023
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10
Energy & Green Tech
Thanks to the low cost of raw materials and long lifespan rendered by their stable structure, iron-based phosphate cathodes are regarded as one of the most promising cathodes for Na-ion batteries (NIBs).
Mar 29, 2024
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41
Energy & Green Tech
The key to developing an electric vehicle battery that can charge as quickly as it takes to fill a car with gasoline lies within its materials.
Jun 5, 2023
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17
Energy & Green Tech
A research group has demonstrated a high-energy lithium-ion (Li-ion) cathode, potentially paving the way for cost-effective, safe and high-capacity Li-ion batteries.
Jan 23, 2023
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8
A cathode is an electrode through which electric current flows out of a polarized electrical device. Mnemonic: CCD (Cathode Current Departs).
Cathode polarity is not always negative. Although positively charged cations always move towards the cathode (hence their name) and/or negatively charged anions move away from it, cathode polarity depends on the device type, and can even vary according to the operating mode. In a device which consumes power, the cathode is negative, and in a device which provides power, the cathode is positive:
An electrode through which current flows the other way (into the device) is termed an anode.
This text uses material from Wikipedia, licensed under CC BY-SA
